Candlestick patterns: what statistics say
Posted: Fri Oct 30, 2026 1:34 pm
Hammers, engulfing candles and dojis fill trading books. The claims are bold: this pattern signals a reversal with high probability.
Large-scale studies on currency data are less enthusiastic. Many patterns show forecasting power close to random once costs are included. A few, in specific contexts, produce a small edge. Context seems to matter far more than the shape: a pin bar at a major support level in a range behaves differently from a pin bar in the middle of a trend.
Another issue is subjectivity. Two traders looking at the same candle can disagree on whether it qualifies, which makes testing hard.
The pragmatic view treats candlesticks as a compact description of what price did during an interval, showing rejection or acceptance of a level. They are a language, not a prediction engine.
Rules that define a pattern in numerical terms, such as wick at least twice the body, make testing possible.
Has any candlestick pattern been tested here with objective rules, and did it hold up?
Large-scale studies on currency data are less enthusiastic. Many patterns show forecasting power close to random once costs are included. A few, in specific contexts, produce a small edge. Context seems to matter far more than the shape: a pin bar at a major support level in a range behaves differently from a pin bar in the middle of a trend.
Another issue is subjectivity. Two traders looking at the same candle can disagree on whether it qualifies, which makes testing hard.
The pragmatic view treats candlesticks as a compact description of what price did during an interval, showing rejection or acceptance of a level. They are a language, not a prediction engine.
Rules that define a pattern in numerical terms, such as wick at least twice the body, make testing possible.
Has any candlestick pattern been tested here with objective rules, and did it hold up?